I'm having issues with both the head unit (CDR2005) and screen in my Vectra (model in thread title).

The head unit volume has a mind of it's own, often increasing in volume rapidly with no intervention from myself. I'm guess this is the potentiometer failing? Is there anything that can be done to fix this?

The screen has lost one complete line of pixels near the top, and now seems to be blurry when displaying any warning pictures (eg. bulb failiure). Again, is there a fix for this?

If the answer is to simply replace both units (and I suspect it is), what other models of head unit will be a plug and play swap? I believe that as my car is a 2003MY, I don't have full can-bus, so options like CD30, CD40 and CD70 are not open to me? Would an NCDC2013 and GID plug straight in?

Thanks for any advice given.